1 farad capacitor for systems up to 1000 watts. Bright LED voltage digital display. Lowest E.S.R. and E.S.L. ratings achievable. Current sensing activation and shutdown. Audible warnings. Machined terminal posts. Helps your electrical system supply consistent voltage. Helps prevent headlights from dimming. Diamond nickel-plated mounting studs. Silver. 1-year Manufacturer"s warranty. Includes a pair of plastic mounting brackets and a resistor for initial charging.